public class A {
     public static void main (String [] agrs){
         System.out.println (System.getProperty("java.version"));
         System.out.println (System.getProperty("java.home"));
         System.out.println (System.getProperty("os.name"));
         System.out.println (System.getProperty("uesr.name"));
         System.out.println (System.getProperty("uesr.dir"));
     }
}
